e-Governance in smart cities represents a transformative approach to urban administration, aiming to enhance transparency, efficiency, and citizen participation through the use of digital technologies. As cities around the world expand and urban populations increase, the pressure on infrastructure, resources, and administrative systems intensifies. In this context, e-Governance emerges as a vital mechanism to ensure sustainable development by integrating information and communication technology (ICT) into urban management. The concept is not merely about digitizing government services but about rethinking governance models to create citizen-centric, inclusive, and sustainable urban ecosystems. At the core of e-Governance in smart cities lies the objective of making governance more responsive, transparent, and accountable. Traditional bureaucratic models often suffer from inefficiency, red tape, and lack of coordination among departments. e-Governance addresses these challenges by digitizing administrative processes, enabling seamless data flow, and reducing human intervention in routine tasks. By providing online access to services such as licensing, tax payment, public grievance redressal, and resource management, e-Governance systems empower citizens and foster trust between government and the governed. The digital interface also allows for real-time feedback and monitoring, ensuring that policy outcomes align with the needs of citizens and the goals of sustainability. The foundation of e-Governance in smart cities rests on several key pillars: digital infrastructure, data management, interoperability, and citizen engagement. A robust ICT infrastructure, comprising high-speed internet, cloud computing, and Internet of Things (IoT) networks, is indispensable for connecting various components of a city’s ecosystem. Smart sensors and IoT devices collect vast amounts of data related to traffic, energy consumption, waste management, water distribution, and air quality. This data is analyzed using artificial intelligence and big data analytics to support evidence-based policymaking. For example, a smart city equipped with real-time traffic sensors can optimize signal timings to reduce congestion, thereby minimizing fuel consumption and carbon emissions—directly contributing to sustainable development goals. Interoperability among various departments and agencies is another crucial aspect of e-Governance. A smart city thrives on the seamless exchange of data across sectors such as transport, health, education, and housing. When systems are integrated, decision-making becomes holistic rather than fragmented. For instance, data from the transport department can be linked to environmental monitoring systems to assess how traffic patterns affect air quality. Similarly, integrating health data with demographic and environmental information helps in better urban health planning. Such interconnectedness ensures that the city functions as a unified system, enabling efficient resource allocation and coordinated responses to emerging challenges. Citizen participation is the essence of e-Governance in smart